Performance in Intel IOMeter Workstation Pattern

This pattern simulates the user’s working in various applications in the NTFS5 files system.

The following diagram shows the dependence of the speeds of the arrays on the request queue depth:

The RAID0 arrays are scalable only at request queue depths of 4 and more. The speed of the three-disk RAID0 at request queue depth = 4 is somewhat higher than extrapolation from the other points of the graph would produce.

The mirrored arrays exactly repeat the results of the arrays the mirrors are built from. The only exception is the RAID1 at queue = 4 when it suffers a strange performance hit.

We calculate the performance rating for the Workstation pattern by the following formula:

Performance Rating = Total I/O (queue=1)/1 + Total I/O (queue=2)/2 + Total I/O (queue=4)/4 + Total I/O (queue=8)/8 + Total I/O (queue=16)/16 + Total I/O (queue=32)/32.

Even the high percentage of writes brings no changes into the ranks compared to File Server and Web Server patterns.